tokit 0.0.0

Blazing fast parser combinators: parse-while-lexing (zero-copy), deterministic LALR-style parsing, no backtracking. Flexible emitters for fail-fast runtime or greedy compiler diagnostics
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79

use core::marker::PhantomData;

use crate::utils::SimpleSpan;

/// An error indicating too many elements were found.
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
pub struct FullContainer<O: ?Sized, S = SimpleSpan, Lang: ?Sized = ()> {
  span: S,
  nums: usize,
  limit: usize,
  _syn: PhantomData<O>,
  _lang: PhantomData<Lang>,
}

impl<O: ?Sized, S> FullContainer<O, S> {
  /// Creates a new `FullContainer` error.
  #[cfg_attr(not(tarpaulin), inline(always))]
  pub const fn new(span: S, nums: usize, maximum: usize) -> Self {
    Self::of(span, nums, maximum)
  }
}

impl<O: ?Sized, S, Lang: ?Sized> FullContainer<O, S, Lang> {
  /// Creates a new `FullContainer` error for the given language.
  #[cfg_attr(not(tarpaulin), inline(always))]
  pub const fn of(span: S, nums: usize, maximum: usize) -> Self {
    Self::new_in(span, nums, maximum)
  }
}

impl<O: ?Sized, S, Lang: ?Sized> FullContainer<O, S, Lang> {
  const fn new_in(span: S, nums: usize, limit: usize) -> Self {
    Self {
      span,
      nums,
      limit,
      _syn: PhantomData,
      _lang: PhantomData,
    }
  }

  /// Returns the span associated with this error.
  #[cfg_attr(not(tarpaulin), inline(always))]
  pub const fn span(&self) -> &S {
    &self.span
  }

  /// Returns the number of elements found.
  #[cfg_attr(not(tarpaulin), inline(always))]
  pub const fn nums(&self) -> usize {
    self.nums
  }

  /// Returns the maximum capacity of the container.
  #[cfg_attr(not(tarpaulin), inline(always))]
  pub const fn capacity(&self) -> usize {
    self.limit
  }
}

impl<O: ?Sized, S, Lang: ?Sized> From<FullContainer<O, S, Lang>> for () {
  #[cfg_attr(not(tarpaulin), inline(always))]
  fn from(_: FullContainer<O, S, Lang>) -> Self {}
}

impl<O: ?Sized, S, Lang> FullContainer<O, S, Lang>
where
  Lang: ?Sized,
{
  /// Formats the error message for this error.
  #[cfg_attr(not(tarpaulin), inline(always))]
  pub fn display_fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
    write!(
      f,
      "found {} elements, which exceeds the maximum capacity of {}",
      self.nums, self.limit
    )
  }
}